There will have to be some damage done to make the repair. I have been doing this for over 35 years and as yet, they don't have nanobots that can go inside the piping and affect a repair. Therefore, we have to open the wall and make the repair from the outside. Depending on the extent of the repair, will be the extent of the damage to the wall or removal of the counters. There's no easy answer for this one.

Good Luck

Raymond VinZant Plumbing Prof.